SOLUTION: Use the formula pH=-log[H^+] a. The hydrogen ion concentration of a hair rinse is about 2.1 * 10^-4 moles per liter. Find the pH. Round to the nearest tenth. b. Find the h

Algebra ->  Exponents -> SOLUTION: Use the formula pH=-log[H^+] a. The hydrogen ion concentration of a hair rinse is about 2.1 * 10^-4 moles per liter. Find the pH. Round to the nearest tenth. b. Find the h      Log On


   

Question 1140121: Use the formula pH=-log[H^+]
a. The hydrogen ion concentration of a hair rinse is about 2.1 * 10^-4 moles per liter. Find the pH. Round to the nearest tenth.

b. Find the hydrogen ion concentration of a solution whose pH is 3.6
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
If molarity of Hydronium concentration is x,
pH=-log%28%28x%29%29
log%28%28x%29%29=-pH

highlight%28x=10%5E%28-pH%29%29------------Use this with a calculator!


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The hydrogen ion concentration of a hair rinse is about 2.1 * 10^-4 moles per liter. Find the pH.
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You want -log%28%282.1%2A10%5E%28-4%29%29%29.